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Re: [Amps] Ldmos won’t bias

To: Ian Swain <>,
Subject: Re: [Amps] Ldmos won’t bias
From: Bruce <>
Date: Sun, 22 Aug 2021 07:50:22 -0400
List-post: <>
Hello Ian,

I have used many of them and I have never had that problem with that device. What board are you using for bias control? Are you getting any resting current at all?

73, Bruce, W8HW


On 8/22/2021 3:05 AM, Ian Swain wrote:
Anyone had a blf188xr fail where you can’t set the bias but when you excite it 
with rf it seems to forward bias on and produce full output ??

My amp was running fine then the above has happened..

I’m picking I’m up for a new ldmos device but is this common ??

Ian de zk2ias

Sent from my iPhone
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